Carbureter.



3 SHEETS'SHBET l.

Patented May 5,` 1914.

R. HUFF. l GARBURETER.

APPLIOATION FILED AUG.29.1907. RENEWED DE.31,1913.

1,095,326. Patented May 5, 1914.

3 SHEEISMSHET 2.

Suva/nto@ www0/ow@ Wt? 5% www# R. HUET.

CARBURETER.

APPLIOATION FILED AUG29,1907. RENEWBD DB0.31,1913.

1,095,326, Patented May 5, 1914.

Z SHEETS-SUNK' 3.

UNITED s'rryrsY PATENT OFFICE.

RUSSELL HUFF, @JF DETROIT, MICHXAN. ASSIGNOB. BY MESNE ASSIGNMENTE, TO ACKARD 'MTR GAI-L COMPANY, OF DETROIT, MICHIGAN ,L CORPORATION 0F MICHIGAN.

CARBURETEB.

Specitlcation of Letters latcnt.

Intvntml Many 5. lili t.

qiywwtni fdrii August 29. 1907, Serial No. 390,652. Renewed December 3l. 1913. Serial Nu. 5292611 if its w. u imi. I, Rssicm, Hrm` :i riti Zon if i f. lvnitril limites. residing nt Dvruit, ftif'iiiiir mamy, Mirlugzin, haw iuvent-ed cfntaiin nvwzinduseful lmpruwinrnts in Uzrimrrtm. of whirh the follnwing u speritieation.

The {'wseiit inwntion relattw www par tirulnrly Lo mzrhuretvrs and it consists in vnl-imita mips-moments in the rnnstrurtiun unil wnrliing uf surh derives.

The rin-rui" n will he dfsf'iibed in runnenti'tu with iur nvrunii'innying drawing. in n fziflr Flauw' l if u Aside vlevation, partly in sectkm. if :i ruriiurvwr embodying the inven :inn: i n pian View partly in .ww-tion in im im" if? nf Fig. l: Figs. 3 und 4- are rf. gw/'wertig :i national elevation mul a plain :i imniilirntiun nf n pari nf the. wif in lfigsi. 'l :intl il; Fig. is n thv limI fr -J if Fi Y. 2; Fig. i', is l the inv iml of iig. 5: Fig. 'I '.ii n part nl' lig. 5, Showing :i moili iivia im; :iwi-wif: ifi". 8 is :i plan of thi parts slumn in Fig. 7; lip. 9 i5 :i swrtiun'on the lint 'J-l nf hg. .3., :mtl Fig. 1f) is :i irctinn nu the lino l?) miit) of Fig. 2.

Referring to thx drawin i l indicates the gariolene filter will anti 2 t ie Hunt rhamber. Those parte are of ordinary mnstructiim :intl need mit het asrrihml in detail. It will in' iirnlerstnufi that the gus-Olen@ asses from ihn fion! chamber dirmtly into tlir Buzzle 3. :mil that it if-z lruwn rmn the nozzle periwiiwally lj: th.' wrtifm irvatefl in the cylinders hy the working iii ehe pi una tlirroin,

Reftrri'itzg m liigfai. i, :sufi 5;. l indicates :hr primari mi' intakt. whivh if.l upon :it its Mutui' Pmi La ihr atnwsphrrv :mil ruuimunifairs it ii1 innir mul with a rhsmiber 3 lurrnuniiing Jhr p'nfnlenr uumlr 3. From ilu: humimr EL n tuhv il. ronfvulrir with ihry nuz- Afir unil surrmintling ilu mnu wils upnaml mw thv mixing rhnrnlwr 7. The upper prin of lhaj fullo (i is {lui-wl outwardly prt-fw :illy :there he outlet of the nozzle f4.. lt will im tindex-Stond that :it ifm-h cycle 0f oper- ;.tmm if thv inginr the gusolrni is drawn friuli iiw nuzzlf Il null zi supph nf air is firatrn through tho intake t anti mixes with iiwgusolc-nv in the mixing e'lmmiwr. The mixing rlnunlwr i roustrurtefl with ii natur jnf'kvt h thruugh whirl: hot watr i8 rirrulr-ucil tu assist in mphrizingj tilt' gwn lvm# ur other liyilrtwnrlmn. The hut nuten* i+1 lff'ifvrnhly tzikru ilirwtly fruni thewatt-r jiu-kot nf the cugini i'yllnilcr uml runtlurtml inn tluwaitin' jm'kvt through tlw inhi il. Aftvr pushing through the natur jauki't thv untel' is ronlurtwl (linnwIrif-:illy :uniss tht` mixing (-lmmlwr in tlutnlw ift tu au outlQt 11. As shown in Figs. 3 :intl il. thv lulu* li is furmwl with nu enlnrgi-nwn'. iz. inning; t downwardly (lrpvnlliug rorrugutfwl uurt'wrv lirertly over the' gzirsnlvnv noli/,lo Il. This pruvid un vnlargzwl lwntmi riufaivr :igziinst which thv inixturil of guwloiu :lull nir ih pr0- jef-wd. whirh greatly fiiviliiutvs alle vupurizingr of the gasoleiw nini iiwrmws the l-ti" rivm-y of the rarhurrtor. 'lli/c iulizlizs i.` runflurtetl from thtl upper mul of tinAV mixing 'immber through suitable mniluiu- (n elw Cylinder ur cylinders of the engl-iw.

Within the mixing chamber i-z n ilu-tilts valve ls wllifh. as shown in Fig. 5. i5 influir Pil to romplvtely close tlw ilu-wi privugr through tlu` mixing clmnilwr. li fuulul desirable tn prm'itle n rluiniwl Ur h vqins leading through or nrmunl tluA miie lil to prmiilo for n minimum i-lizirggf tu" mix/turi- Whif-h Will permit of minimum split-l of the migine. In the present instnnrr l pim-ithn hy-pass whirh is :|(('i= ililv from the outsirlv of th(` mixing ilmlnlwr :mtl mijuhtulilf tu var v th@ minimum supply of mixture.

llrferrinp tu Fig. 14. l5 intlwutu twu livres m' pussugw whirh uitii'rrrt und which extend, entirely iin'magli tlw u i wf the mixing rlmmlati' ami through will! inruil ex tending across th(- wzite-r invittl, )nu if ihrs@ tubes iu rlnszml tu' iluJ ontwik ity if plug 16 whiliA thi* other isvimini h i :in mliutnhlivalve 17, tht .L1-trui wlw biting :ulzigitvd tf, r'lusv thi b v-iuss l. w leali/Q Samir open tn ani.' tlesirml lie-gire. Tim a-:ilie l? is provided with :i imlt nut L, for imiiiingz the valve inv any dei-winni mliuntmrni. it will tw nbviml, that thtx bypass can he mijzushftl with ense from the outside. und also that ity mm birmxdily cleaned by' remo-ving thv plug' 16 and the valve 17.

In Figs. l 'nml l have shown nwiuw fur prm'iding an auxiliary mir supply in the mixing mmher. such additional supply livin necsarv when the. engine ist running :it a liigh fspeetl. and I have also shrfwn mwms for regulating this auxiliary sur wnppljv.

Li. fil' ylll lin

ing when the vehicle is running; at fz i high speed and the suniinn will. grml. The gear is controlled li a mdc il? wxinwf'. ing md 34, arm 353, muli slml'i im nml mami lever 3E', thv said mijl: Slm lt lwimg mmlutwl in lwui'iii.; mi lw :lmls lum-d. Inimble lntvli ny pnwl ma llac lmui im iS uilaplexl to l tlnlm'min any is udjizstmvm. with icmpw, 1w :i uwlvlmi mont EN.

fumetlmmx le'illi lllis :mm wm vulling;

meegaan arm being adapted to engage a 'pin 41 on the arm 41", which actuates the valve 89, when the wedge is moved to a 'tion to give the maximum tension to e s rin `urtlier movement of the wedge ii r t e in 41* causes the valve position and when the wedge is moved in the opposite direction the valve is opened by the spring 43.l

In Fi T and 8, the outlet from tne water jacket 8 is through a tube 10 extending diametrically across the mixing chamber directly over the gasolene nozzle. This tube l0 is preferably threaded to increase its surface and the gasolenc is sprayed toward it. T he tube thus acts as a ba e to intercept any unvaporized gasolene and hold it in a current of air. and it also serves to vaporize the gasolenefdue to its heat.

Having described my invention, what I claim und desili'a'fo secure by Letters Patent is:

1. In a carbiireter for hydrocarbon engines, the combination with a gasolene inlet nozzle of a primary. air intake, a secondary air intake, independently operating valves for said intakes and a common means controlling said valves.

2. In a carbureter for hydrocarbon engines, the combination with a solene inlet nozzle of a primary air intake iaving a normally open valve, a secondary air intake having a valve normally closed under tension. and a commonmeans operating to inirca.-e the tension on the valve of the secondary air intake and to close the valve of .the primary air intake.

3. In a carburetor for hydrocarbon engines, the combination with a gasolene inlet nozzle of tivo independent air intakes for sup lying air to mix 'with the gasolene from' san nozzle. independently o rating valves in said intakes, and means or closing said valves to increase the richness of the mixture supplied tothe engine, for the purpose set forth.

4. In a carbureter for hydrocarbon engines. the combination .with a lene inlet nozzle arranged to discharge into a mixing chamber, of a primary air intake leading to said chamber, a secondary air intake therefor` a valve for closing said latter intake, a sprin normally holding said valve closed, a secon s ring normally relaxed and serving as a cus ion or yielding stop for the opening movements of said valve and means for placing the valve under tension of both said arm 2i)h engages the to be swung to cl i spi-ings, for the purpose set forth.

n a ciirliiireter for hydrocarbon engines, the combination with a solene inlet nozzle arranged to discharge into a mixing chamber, of a primary air intake lending to said chamber. a secondary air intake therefor, a valve for closing said latter intake, a .spring normally holding said valve eleaad, a

. chamber, a secondary rating with said chamber,

second spring normally relaxed and serving as a cushion or yielding stop for the 'opening movements of said valve, and a manually operated cam for lacing the valve under tension of both saidp springs, for the purpose set forth.

0. In a carbureter for hydrocarbon engines, the combination with a gasolene inlet nozzle arranged to discharge into i mixing chamber, of a primary air intake leading to said chamber, a secondary air intake there for, a valve for clnsin said latter intake, a spring normally holding said valve closed, a second spring normally relaxed and serving as a cushion or yielding stop for the opening movements of said valve, and a cam for plading the valve under tension of both said s rings, for the purpose set forth.

7. n a carbureter for hydrocarbon engines, the combination with a gasolene inlet nozzle arranged to discharge into a mixing chamber, of a primary air intake leading to said chamber, a secondary air intake therefor. ii valve for closin said latter intake, aspring normally holding said valve closed, a second spring normally relaxed and serving as a cushion or yielding stop for the o ening movements o said valve, a sliding a u tment for said springs, and a cam operating on said abutment to place the -valve under tension of both said springs, for the purpose set forth.

8. In a ciirbiireter for hydrocarbon enines, the combination withl iimixing chamr, a gasolene nozzle therein, anda rimarv air intake provided with a valve an a roc t shaft for operating said valve of a-secondary air intake provided with a valve, a spring for normally closing said valve, and moans for simultaneously increasing the tension of said spring and rocking said shaft to close the valve of the primary air intake.

il. In n carhiireter for hydrocarlxin ennee, the combination ivitli a mixing chamr, of a primary air intake leading to said air intake communia valve for closing thJ litter intake. .a spring normally holdin said valve closed, and ii wedge shape cam movable relatively to the valve to increase the tension of thes iring.l

l0. In a carbiireter for hy rocarbon engines, the combination with a mixing chamier. of a primary air intake leading to said chamber. a secondary air intake communicat ig with said chamber, a valve for closing the latter intake. a spring normally holding said valve closed. and a straight wedge shaped cam movable relatively to the valve to increase the tension of the spring.

i1. In ii ciirbureter for hydrocarbon enines, the combination with a mixing chamiei', of a primary air intake leading to said chamber, ii secondary'air intake communieating with said chamber. a valve for nlne- Ain' the latter intake,

a spring normally ho ding said valve closed, a second spring normally inoperative on the valve, and a wedge shaped cam movable relatively to the valve and adapted to place the valve under tension of sai second spring.

l2. In a carbureter for hydrocarbon engines, the combination with a mixing chamber, of a primary air intake leading to said chamber, a secondary air intake communieating with said chamber, a valve for closing the latter intake, a spring normally holdin said valve closed, a second spring norma lv inoperative on the valve, and a wedge s mped cam movable relatively to the valve and adapted to increase'the pressure of both of said springs upon the valve to close the latter.

13. In a carbnreter for hydrocarbon enginas` thc combination with the mixing chamber, of an air intake, a valve therefor, a casing or lsupport in which the stem of the valve is mounted, a spring surrounding the .stem of the valve and bearin 4at one end upon a movable block and at t e other end til) upon a head lixed to said stem, and a wed shaped cam arranged to shift the movabe block on the stem to increase the tension of said s ring.

14. n a carbureter, the combination ofa frame forming a mixing chamber ada ted for connection with an engine to be supp ied, means for supplying fuel into said chamber. primary nml secondary nir inlets to said mixing' chamber. a valve for said secondary inlet controlled suction within the mix ing chamber to a mit air through said inlet to the mixin chamber, a spring for primarily resistin the opening of said valve and for contro ling the operation of said valve during a certain range of suction within the mixin chamber, and a second spring adapted to e automatically brought into service when the suction exceeds a certain value to assist the first spring in controlling the openn and operation of said valve during sai( increased suction.

lf. ln acarbureter, the combination of a frame forming a mixing chamber ada ted for connection with an eu 'ne to be supp ied, means for supplying fue into the. mixing i-hamlx-r, primary and secondary air inlets for said mixing chamber, a valve for said secondary inlet ada )ted to be opened by the suction within sai chamber, a comparatively weak spring tending to prevent opening of said valve durin a certain range of suction within the cham er, and a comparatively heavy spring primarily inactive and adapted to he automatically bron ht into service hy increased suction wit in the chamber to assist the weak spring in controlling the opening and o eration of said valve during such increase suction.

16. In a carbureter, th'e combination of a .frame forming a mixing chamber adapted to be connected with an engine to be sulp plied, means for supplying fuel into 't e mixing chamber, rimary and secondary air inlets for said .c|amber, a valve for said secondary inlet adapted to be opened by suction within the chamber, a comparatively light spring always engagin r the valve and tending to resist opening thereof, and a comparatively heavy spring normally disconnected from said valve and adapted to be automatically brought into operative association with said valve, a-fter a predetermined degree of opening of said valve, whereupon both springs will coperate to control the opening and operation of the vallve w regulate the air flow through said in et.

17. In a carbureter, the combination of a frame forming a mixing chamber adapted to be connected with an engine to be su plied, means for supplying fuel into the mixin chamber, primary and secondary air inlets or said chamber. a valve for said secondary inlet adapted to be opened by suc tion within the chamber, a comparatively light spring always engagin the valve and tending to resist opening t ereof, a comparatively heavy spring normally disconnected from said valve and adapted to be automatically brought into operative association with said valve after a predetermined degree of opening of said valve, whereupon both springs will coperate to control the o enin and operation of the. valve to regu ate t e air'tiow through said inlet, and ad'nsting means `for determining the degree oi openin of said valve whici will cause said secon spring to become operatively active.'

18. In a carburetor, the combination of a frame forming a mixing chamber adapted for connection with an engine to be snpplied. means arranfcd below said chamber and in alinement tierewith for snpplyin fuel into the chamber, aV rimary air`inle below said means. a secon ary air inlet arranged laterally of said chamber and in communication therewith, a valve for said secondary inlet adapted to be opened by suction withinthe mixing chamber to admit air through said inlet to the mixing chamher, a spring for independently resisting the opening of said vulve for the lower range of auction in said chamber, and a second spring adapted to coperate with the firstnicntionedsprinq to resist the opening of said valve `for tie higher range of suction in said chamber.

ll). In u carhnreter, the combination of a Frame forming a mixing chamber adapted for connection with an engine to be supplied, a `throttle valve in said chamber, means arranged below said chamber and in alinement therewith for snpp1ying.fuel

M, ulm Cul'ftcflle with dmwlmlml puny u* rse l the open- .nsfl wlw fm l'lw l Slm range 0f mi lmaallmx :md menus for ad! immun of lmtlx nl' said springs. luvvelfrlmu mmm. the combinal. .f .',funtrollvd mmu for macccsblwly u 'Eng mlm pum/*rg0 wf zur ln'nngli bull] nl intakes.

:l minimi :ulxpml h, wm ffpfnlng nmwments of amd nlm?, lmffl 1 ':mgwlsingf a member Hav ing un Mavim 1 $.11 lmf fur varying the, wir Mm of lh .1K if "ziel springs.

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